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Finding the Third Proportional to 66,375 and 143,316

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Solution

The third proportional to 66,375 and 143,316 is: 309,445.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,375 : 143,316 = 143,316 : x
  2. Step 2: Convert to fraction form
    66,375/143,316 = 143,316/x
  3. Step 3: Cross multiply
    66,375x = 143,316 × 143,316
  4. Step 4: Simplify right side
    66,375x = 20,539,475,856
  5. Step 5: Solve for x
    x = 20,539,475,856/66,375
  6. Step 6: Final answer
    x = 309,445.96

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.